Re: [DMCForum] Measure Color.

[Andrew <aos+yahoo@xxxxxxxx>]

On Fri, 11 Jun 2004, Marc Levy wrote:

> There is a cool to use when setting up big screen
> TV's.  You put it up on the screen, and it tells you
> when the colors are "correct".

Right.  It's called, amazingly enough, a colorimeter, and is used for
(among a number of other more esotric tests) attempting to get a display
device to produce a 6500K color temperature all the way across the IRE
range.  Color temperature describes the color (and therefore wavelength
and frequency) of light emitted by a blackbody raised to that temperature,
and is quantified by Stefan's blackbody radiation law.  Yes, sometimes
being a crossover physics/video geek actually has its applications.  :)

Colorimeters work equally well if the operator is blind or sighted, but 
science has yet to produce a god detector that works for atheists.

-andrew

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